SEISMIC RESPONSE ESTIMATION OF STRUCTURE UNDER PULSE-TYPE NEAR-FIELD GROUND MOTION

The typical pulse-type near-field ground motion records were chosen to establish a record base, and three pier models with different natural period were established; the effect of structural response estimation by using the non-elastic response spectral displacement of ground motion was studied by using a nonlinear time history analysis, and the influence of parameters of the nonlinear oscillator on seismic response estimation was observed; the yield displacement of the nonlinear oscillator was defined according to the static pushover analysis result, and its influence on response estimation was studied. The study result is important for structural seismic response estimation by using the non-elastic response spectral displacement and the probability-based aseismic performance evaluation.